7. how many joules of heat energy are absorbed in
raising the temperature of 10. grams of water from
5.0°c to 20.°c?
a) 1.1 x 103
b) 8.4 x 102
c) 6.3 x 102
d) 2.1 x 102

C) 6.3 x 10^2 Joules

We are given;

We are required to calculate the amount of heat energy absorbed..

Specific heat capacity of water, c is 4.184 J/g°C

Therefore;

Q = 10 g ×  4.184 J/g°C × 15°C

   = 627.6 Joules

   = 6.3 × 10^2 Joules

Thus, the heat energy absorbed is 6.3 × 10^2 Joules

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